Adjustable in 3 positionsThe height of the shoe groove can be adjusted from 2.7 inches to 7.2 inches according to the type of shoes. It is suitable for most children's shoes, slippers, flat shoes, sports shoes, sandals, high heels, etc. (the size should bellow 9). With a fine size design, you don't have to worry about the shoes being squeezed. SPACE SAVINGThe double deck shoe rack design help saves 50% of your storage capacity immediately and hlep you find the right shoes quickly, making your shoe closet and garderobe more tidy and orderly. The innovative design of the shoe slot accommodates twice the previous shoe and provides an excellent space-saving solution for the bedroom, wardrobe and shoe rack. ANTI-SLIPPING DESIGNOur shoe stacker is specifically designed with top flaps at both sides and behind along with little bumps on the surface to prevent the upper shoe from slipping off, keeping your space tidy and neat. With a fine size design, you don't have to worry about the shoes being squeezed. Quality MaterialThe shoe stack is made of high-quality ABS and durable green non-toxic PP to ensure your health and protect the environment. The improved thickness makes the shoe slots organizer quite unlikely to be broken by heavy pressure or frequent use. EASY CLEAN & WARRANTY The shoe slot can be cleaned easily with water and soap and have longer use time.